package cn.tedu.boot.demo.web;

import cn.tedu.boot.demo.ex.ServiceException;
import lombok.Data;

@Data
public class JsonResult<T> {

    private Integer state; // 业务返回码
    private String message; // 消息
    private T data; // 数据

    private JsonResult() {
    }

    public static JsonResult<Void> ok() {
        return ok(null);
    }

    public static <T> JsonResult<T> ok(T data) {
        JsonResult<T> jsonResult = new JsonResult<>();
        jsonResult.state = State.OK.getValue();
        jsonResult.data = data;
        return jsonResult;
    }

    public static JsonResult<Void> fail(ServiceException e) {
        return fail(e.getState(), e.getMessage());
    }

    public static JsonResult<Void> fail(State state, String message) {
        JsonResult<Void> jsonResult = new JsonResult<>();
        jsonResult.state = state.getValue();
        jsonResult.message = message;
        return jsonResult;
    }

    public enum State {
        OK(20000),
        ERR_BAD_REQUEST(40000),
        ERR_CONFLICT(40900),
        ERR_INTERNAL_ERROR(50000);

        Integer value;

        State(Integer value) {
            this.value = value;
        }

        public Integer getValue() {
            return value;
        }
    }

}
